Measuring – testing – or signalling instruments – Security or signal instrument or casing – Aural – i.e. – audible
Patent
1998-06-09
1999-02-23
Jackson, Marcus A.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Aural, i.e., audible
1005
Patent
active
D04060741
REFERENCES:
patent: D275843 (1984-10-01), Sharenow
patent: D345317 (1994-03-01), Ossa
patent: D382221 (1997-08-01), Chen
patent: D397636 (1998-09-01), Chu
Alertek Corporation
Jackson Marcus A.
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